FEATURES: Fast, ultra wide-angle AF-S zoom lens optimized for edge-to-edge sharpness on both Nikon FX and DX format image sensorsEnhanced optical formula, which offers superior sharpness, contrast and color, what to produce quality integrityTwo ED (Extra Low Dispersion) elements and PGM aspherical lenses control chromatic aberrations while reducing the sharpness and contrast even at maximum aperture setting Exclusive Nano Crystal Coat further